Alarm-clock



W. J. SMITH.

ALARM CLOCK.

APPLICATION FILED MAY 25, 1918.

Patented Feb. 24,1920.

@ ov m? UNITED STATES PATENT ormon.

WILLIAM J. sivrrrn, or WATERBURY,

ALARM-CLOCK.

Specification of Letters Patent. 1 Patented Feb. 24, 1920.

'Application filed May 25, 191s. SerialNo. 236,458.

To all whom it may concern:

Be it known that I, WVILLIAM J. SMITH, a citizen of the United States, residing at WVaterbury, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Alarm- Clocks; and I do hereby declare the following, when taken in connection with the accompanying drawings and the characters of reference marked thereon, to be a full,

clear, and exact description'of the same,-

and which said drawings constitute part of this application, and represent, in-

Figure 1 a view partly in front eleva? tion and partly in vertical section of an alarm-clock constructed in accordance with my invention, with a portion of the dial and case broken away. V,

Fig. 2 a detached perspectiveview showing the alarm-set spring, the alarm shut-ofi lever, and the hammer-stop wire, in the posiions they occupy when the alarm is shut o My invention relates to an improved alarm-clock of the type commonly designated in the trade as nickel alarms, the object being to provide an alarm-clock of the character described, with simple and reliable means whereby the alarm may be manually shut off after it has begun ringing, and whereby it is automatically reset.

\Vith these ends in view, my invention consists in an alarm clock having certain details of construction and combinations of parts as will be hereinafter described and pointed out in the claim.

In carrying out my invention as herein shown, I employ a finger-button 2 located within the bow or ring 3 and secured to the upper end of a shut-off plunger t passsheet-metal clock case 6. A helical spring 7 located within a recess 8 in the upper end of the pendant provides for normally maintaining the said plunger in its elevated position. The lower end of the plunger is formed with an enlargement 9 the upper edge of which engages with the inner end of the pendant and limits the outward movement of the plunger under the action of the spring 7 The lower end of the sa d enlargement 9 of the plunger engages with the upper face of an arm 10 bent inward at a right angle from the upper edge of an alarm shutlever 11 mo n ed up n a staff 12 the forward end, of which is .journaled in the front movement-plate 13 ccnnncrrcncr,isssrcrnoaftro WATERBURY cLocK i or WATERBURY, connncrrcu'r, ACORPORATI01\T..

and the rear end of which is journaled in y the rear movement plate which 1s not shown. A spring 1e encircling the. said staff is engaged at one end with the lever and exerts a constant effort to lift the same inner end of the said lever isforrned with a depending locking-arm 15 the lower end of which is furnished with a stopfinger 16 bent inward at a right angle in position to co-act with the hammer-stop wire 17 of the alarm. train, the said wire being mounted as usual in an arbor 18 carrying the verge 19 and the hammer-wire 20. The lower end of the locking-arm 15' is; also formed with a hook 21 the beak of which into its normal or. unlocked position. The

engages with the lower edge of the bent" inner end of the alarm-set spring 22 the bent inner end of which is formed with a releasing offset 23, the said spring being other: wise of ordinary construction and being operated as usual by the action of an alarmcam 24 carried by an alarm-cam wheel 25 and co-acting with a finger 26 projecting from a collet 27 on the alarm-set arbor 2S, op which the wheel 25 is free to move latera ly. y r

.In the ordinary running of the clock, the alarm shut-off lever 11 occupies the position shown by broken lines in Fig. 1. Now when the alarm is being sounded; it may be manually shut off by pressing the plunger downward by the application of the finger to its button 2, whereby the lever 11 is depressed and its sto -finger 16 brought into engagement with the hammer-stop wire 17 for stopping the vibration of the hammer. At the same time, the beak of the lock ng-hook 21 is engaged with the lower edge of the inwardly turned bent end of the alarm-set spring 22 at a point just inside of the offset 23 therein. This results in looking the alarm shut-off lever in its depressed position in which it prevents the alarm from sounding as shown by full lines in Fig. 1. Now-in the due operation of the time-train, the alarm-cam 24c forces the wheel 25 inward and with it the spring 22, whereby the beak of the book 21 is brought into registration with the offset 23 of the spring 22, thus releasing the alarm shut-off lever 11 to the action of its spring l t by which it is lifted into its unlocked posi- Fig. 1. This automatic release the lever '11 will ordinarily take place within an hour or two after the alarm has been sounded. hen the lever is lifted by the action of its spring 14, its locking-hook 21 is cleared from the alarm-set spring 22 as well as from the hammer-stop wire 17, but meanwhile the.

spring 22having been pushed backward by the alar1n-cam 2% for releasing the lever 11' to the action of its spring 14:, has brought its inner end into position to co-act with the stop-wire 17 so that before the lever 11 is released by the spring 22, the same has already been brought into position to co-act with the stop wire 17 in preventing the sounding of the alarm. Ina sense, therefore, when the lever 11 is lifted, the restraint of the alarmtrain is shifted from the stop-hook 21 to the inner end of the lever 22. Of course the plungerinight be replaced by any other man ually operable shut-off member.

I claim c In analarmclock, the combination with the pendant thereof, of a manually operable shut-ofi" plunger mounted therein, va pivotal alarm shut-ofl? lever positioned to be operated by the said plunger and formed with a depending locking-arm the lower end of V which is furnished with a stop-finger and 'ing witnesses.

with a hook, a hammer-stop wire engaging with the said stop-finger to shut 01% the alarm, an alarm-set spring having its free end inwardly bent for oo action with the said hammer-stop wlre and also ofiset for coaction with the said hook which engages cam the hook, and hence the lever, is released, after which the said spring engages with the said stop-wireto prevent the soundng of the alarm until the sald, spring is again released by the said cam.

In testimony-whereof, I have signedthis specification in the presence of two subscrib- 7 WILLIAM (I; SMITH.

Witnesses:

H. B. Dow, c J. R. PUTNAM. 

